RunRyder RC
WATCH
 1 page 971 views POST REPLY
HomeAircraftHelicopterMain Discussion › NI-MH or LIPO
09-04-2013 03:47 PM  4 years agoPost 1
PPBAL

rrApprentice

ca

My Posts: All  Forum  Topic

Which is better to use? Lipo or Ni-mh battery for my Spektrum DX7s Transmitter? Right now I have 4.8V 2000 mah ni-mh that came with it. Can I use 4000mah? The 4000mah is only in lipo in 7.4V but not Ni-mh. If anyone knows a 4000mah 4.8V Ni-mh please let me know. Thank you and I appreciate your replies.

PM  EMAIL  GALLERY  Attn:RR  Quote
09-04-2013 06:44 PM  4 years agoPost 2
kingmeow

rrApprentice

The Garden State, US

My Posts: All  Forum  Topic

I had similar thoughts when I got my DX7s. But my experience shows that the factory NiMH last quite a many flights. Initially I was thinking of going lipo immediately but I gave the NiMH a chance. I don't think I'll ever need to go lipo and thus I just saved myself some $$$.

PM  EMAIL  Attn:RR  Quote
09-04-2013 07:31 PM  4 years agoPost 3
Craigdieslemac

rrKey Veteran

Valdosta, Ga USA

My Posts: All  Forum  Topic

My DX7 has had the same battery since I bought it, over 5 years ago. and it is a NI-MH.

PM  EMAIL  GALLERY  Attn:RR  Quote
09-04-2013 08:36 PM  4 years agoPost 4
Two Left Thumbs

rrKey Veteran

Houston, Texas - USA

My Posts: All  Forum  Topic

I learned my lesson with TX batteries. Use the spec pack or options from the manufacturer, or at least the same chemistry. Something else may work, but you take it on yourself if you cause any damage.

Yes people run alternate batteries, but if you would rather fly than tinker with your TX then stick with the NiMH. If you would rather tinker, well, tinker There are lots of ways to enjoy this hobby.

Are you getting enough flight time on your 2000 pack? If not, take it out and run a few cycles on it. Discharge to 1.0v per cell, and charge it at 200mA for 14 hours. That will perk up a tired NiMH pack. The pack will be warm at the end of the charge cycle, but that is OK and even desirable.

PM  EMAIL  GALLERY  Attn:RR  Quote
09-04-2013 08:56 PM  4 years agoPost 5
NQNA

rrElite Veteran

USA

My Posts: All  Forum  Topic

My DX18 with the lipo doesn't need charged for almost a month at a time. With my old 9303 I would run out of battery power on one single flight day. For Me it's Lipo hands down.

PM  EMAIL  GALLERY  Attn:RR  Quote
09-04-2013 09:02 PM  4 years agoPost 6
sonnyhad

rrProfessor

Holland,Mi

My Posts: All  Forum  Topic

If you read the dx7 manual it says nothing about using a lipo battery, but in the firmware there was a choice and someone found out how to do it and posted it in the forums. So you gotta wonder why the manufacturers don't put that info out there. Now i see its a popular choice for spektrum users.

Bald Pilots usually wear hats!

PM  EMAIL  GALLERY  Attn:RR  Quote
09-04-2013 09:18 PM  4 years agoPost 7
doorman

rrProfessor

Sherwood, Arkansas

My Posts: All  Forum  Topic

TX Battery...
NEW! 2000ma Eneloop 4.8v Spektrum DX8
4 cell flat pack w/ connector.
-
The same physical dimensions as the original 2000ma NiMH OEM pack that came with your radio system. No mod's required to the battery bay on the radio, this is a direct fit, drop in eneloop replacement pack. Eneloop packs come pre-formed and at 70% of charge so you can put them in service right out of the bag. Charge retention is superior to any other AA NiMH type. Compatable with the charger in your radio, however, as with all AA Tx packs, use caution; don't overcharge. When the pack warms up, stop the charge! The pack comes shrink wrapped and complete with the correct white Spektrum/JR Tx connector for the DX8 Transmitter.
-
http://www.hangtimes.com/txpacks.html

Take a look at these Eneloop batteries... I put a set in my JR 12X 2 years ago.. I top them off once a month whether they need it of not...They do not loose charge even sitting in the shop!!!

Good Luck, Stan

AMA 2918-Team Spin Blades,,Castle Creations, Unique Aircraft

PM  EMAIL  GALLERY  Attn:RR  Quote
09-04-2013 09:35 PM  4 years agoPost 8
fla heli boy

rrKey Veteran

cape coral, florida

My Posts: All  Forum  Topic

I was going to get a Pulse pack specific for my DX8 but they were out...so I spent the extra coin and got the Spektrum LiPo.....
See how it goes. I will be taking multiple planks and multiple helis to the field, so I'm thinking it was a necessity.

PM  EMAIL  GALLERY  Attn:RR  Quote
09-05-2013 03:16 AM  4 years agoPost 9
cudaboy_71

rrElite Veteran

sacramento, ca, u.s.

My Posts: All  Forum  Topic

i've been flying for 30+ years and made the transition from nicd to nimh to lipo or life.

the thing about the nicd/nimh is the voltage dropoff is a cliff. that is, your voltage can be showing fine one second, and "beep beep" you have less than 4 seconds before the radio just shuts off. bad news if you're higher than 10'AGL.

also, the voltage bleeds off the packs pretty quickly on the shelf with nickel packs, too. lipos barely bleed off at all. so, you either have to remember to charge your TX before every flight session OR set up a trickle charge station (which I did). It's not that big of a hassle with an auto charge/trickle setup. but, i bet it's pretty hard to find one these days...in which case you're back to charging each night before you go.

because of the ease of MY setup, i said i'd never go lipo. then, my nimh pack died and i figured what the hell...and got a lipo.

i'll never go back. i put a stepdown resistor in my radio so i can use a regular lipo. and, i can charge my tx pack as easily as a flight pack. but, i simply don't have to worry about it for over a month of flying 2-3 times a week. it is very nice being able to just grab the tx off the shelf and go fly.

just my 2¢

if it ain't broke, break it.

PM  EMAIL  HOMEPAGE  GALLERY  Attn:RR  Quote
09-05-2013 03:30 AM  4 years agoPost 10
kingmeow

rrApprentice

The Garden State, US

My Posts: All  Forum  Topic

Sanyo Eneloops and the newer breed low self discharge NiMH will retain their charge on the shelf like lipos. They are also more tolerent to over charging. But lipo you can charge at a much higher C rating.

PM  EMAIL  Attn:RR  Quote
09-05-2013 04:17 AM  4 years agoPost 11
ICUR1-2

rrElite Veteran

Ottawa, Ontario

My Posts: All  Forum  Topic

how about using a 5 cell nimh rx pack??. I have some lsd nimhs that are same size as original cells and 5 would fit nicely.

spending time, paying attention

PM  EMAIL  GALLERY  Attn:RR  Quote
09-05-2013 12:54 PM  4 years agoPost 12
Jeff polisena

rrElite Veteran

westpalmbeachflorida usa

My Posts: All  Forum  Topic

A fully charged NiMH will last a full day of flying unless its bad . If new leave alone ,you have to charge other batteries so just charge TX at same time . I don't charge my DX7 pack until it gets low and I'm getting a weekend out of it .

I stole it ,flew it and gave it back ;)

PM  EMAIL  GALLERY  Attn:RR  Quote
09-05-2013 01:06 PM  4 years agoPost 13
sharam

rrElite Veteran

Northern California - Fly at Morgan Hill Field

My Posts: All  Forum  Topic

My JR11X runs on Eneloops. A great benefit is that I use the same wall charger that came with the transmitter. An overnight charge lasts many days of flying. Much more preferable than the original battery that the transmitter came with!

Shelf life is excellent. Very little self discharge!

Verba volant, scripta manet

PM  EMAIL  GALLERY  Attn:RR  Quote
09-05-2013 02:02 PM  4 years agoPost 14
kingmeow

rrApprentice

The Garden State, US

My Posts: All  Forum  Topic

how about using a 5 cell nimh rx pack??. I have some lsd nimhs that are same size as original cells and 5 would fit nicely.
I don't see why that would be a problem unless weight is a problem.

PM  EMAIL  Attn:RR  Quote
09-05-2013 03:22 PM  4 years agoPost 15
johnbs8

rrKey Veteran

roseville michigan

My Posts: All  Forum  Topic

i put a hyperion tx life pack in my dx7 and its been awsome!! i charge every 2 months or so with no issues and i could go longer than that.

TT X50 Nitro
Warp 360
Logo 550sx
TeaM KicKnWinG

PM  EMAIL  GALLERY  Attn:RR  Quote
09-05-2013 03:30 PM  4 years agoPost 16
Magneto 3D

rrNovice

Boston MA.

My Posts: All  Forum  Topic

I also use Hyperion life packs in my Dx 7 SE and Futaba 14SG altho I don't see anything wrong with the fac tory packs included ,the advantage to the life is weight and fast charging as well as being able to use the wall charger still ,that's a deal breaker as far as lipo is concerned for theses radios ,and the chemistry is safer too I am told but haven't heard of a radio going up in flames either!

Team Kontronik Germany

PM  EMAIL  GALLERY  Attn:RR  Quote
WATCH
 1 page 971 views POST REPLY
HomeAircraftHelicopterMain Discussion › NI-MH or LIPO
 Print TOPIC  Make Suggestion 

 10  Topic Subscribe

Saturday, August 18 - 5:10 pm - Copyright © 2000-2018 RunRyder   EMAILEnable Cookies

Login Here
 New Subscriptions 
 Buddies Online